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Promotional Credits: In Oklahoma, promotional credits are taxed as normal revenue. Withholding Tax on Gambling Winnings: winnings are taxed as supplementary wages under state tax law.

Form 511EF I authorize the Oklahoma State Treasury and its designated Financial Agent to initiate an ACH electronic funds withdrawal (direct debit) entry to the financial institution account indicated in the tax preparation software for payment of my Oklahoma taxes owed on this return.

File as Oklahoma married filing separate. The Oklahoma resident, filing a joint federal return with a nonresident civilian spouse, may file an Oklahoma return as married filing separate. The resident will file on Form 511 using the married filing separate rates and reporting only his/her income and deductions.

Oklahoma residents are required to file an Oklahoma income tax return when they have enough income that they must file a federal income tax return. Nonresidents are also required to file an Oklahoma income tax return if they have at least $1,000 of income from an Oklahoma employer or other source.

A resident taxpayer who receives income for personal services performed in another state must report the full amount of such income on the Oklahoma return (Form 511).

OK 512S Information All corporations having an election in effect under Subchapter S of the Internal Revenue Code (IRC) engaged in business or deriving income from property located in Oklahoma and that are required to file a federal income tax return using Form 1120-S, must file a return on Form 512-S.

Oklahoma Tax Commission Forms - Forms.OK.Gov - Oklahoma Digital Prairie: Documents, Images and Information.

Promotional Credits: In Oklahoma, promotional credits are taxed as normal revenue. Withholding Tax on Gambling Winnings: winnings are taxed as supplementary wages under state tax law.